Finding the Fourth Proportional to 259,445.20, 388,879.80 and 101,621.20
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Solution
The fourth proportional to 259,445.20, 388,879.80 and 101,621.20 is: 152,318.99
Step by Step Solution
- Step 1: Write the proportion equation
259,445.20 : 388,879.80 = 101,621.20 : x - Step 2: Convert to fraction form
259,445.20/388,879.80 = 101,621.20/x - Step 3: Cross multiply
259,445.20x = 388,879.80 × 101,621.20 - Step 4: Simplify right side
259,445.20x = 39,518,431,931.76 - Step 5: Solve for x
x = 39,518,431,931.76/259,445.20 - Step 6: Final answer
x = 152,318.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.